Twenty-four hour time piece



(No Model.)

H. G. PICK.

TWENTY-POUR'HOUR TIME PIECE.

Patented Dec. 16, 1884.

Q 1| ET :1 1| II n u nu WITH [I ll II II INVENTOR BY ATTORNEYS gmsssswfi UNITED STATES HENRY C. FIOK, OF NEXV YORK, N.

PATENT OFFICE.

TWENTY-FOUR-HOUR TllVlE-PIECE.

SPECIFICATION forming part of Letters Patent No. 309,38t, dated December16, 1884.

Application filed March 17, 188 1.

To aZZ whom it may concern:

Be it known that I, HENRY G. FIGK, of the city, county, and State of NewYork, have invented certain new and useful Improvements in Time-Pieces,of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

- Figure l is a front elevation of a elocl; to which my improvement hasbeen applied, part of the dial being broken away. Fig. 2 is a sectionalelevation of a part of the same, taken through the line 00 m, Fig. 1.Fig. 3 is a sectional elevation of a part of the same, showing anotheradjustment of the hands. Fig. at is a front elevation of a part of thesame, showing another adjustment of the hands from that shown in Fig. l.

The object of this invention is to construct clocks and other timepieceshaving an ordinary movement in such a manner as to indicate the time forthe first twelve hours of the day upon the ordinary figures of the dial,and for the last twelve hours of the day upon fig u res running fromthirteen to twenty-four and placed at the outer or inner side of thecircle of the ordinary figures. 1

The invention consists in a timepiece constructed with a third handinterposed between the two ordinary hands, and adapted to be thrown outof gear with one of the ordinary hands and into gear with the other by aspring operated by a mechanism driven from the hour-wheel, as will behereinafter fully described.

A represents the frame of the movement. B is the post carrying theminute-hand G, and D is the hollow post carrying the hour hand Thehollow post D revolves upon a hollow post, F, placed loose upon theminutehand post 13, and having a hand, G, attached to its outer end.

Upon the outer and inner sides of the hub of the hand G are formedprojections or teeth H I, to engage successively with recesses J K,formed one in the hub of the minute-hand O and the other in the hub ofthe hour-hand E, or in the end of the hollow post 1), carrying the saidhounhand. The minute-hand O and (No model.)

the hour-hand E are placed at such a distance apart that the hollow postF can have sufficient longitudinal movement to throw the hand G intogear with the minute-hand G, as shown in Figs. 2 and 4, or with thehour-hand E, as shown in Figs. 1 and 3.

Around the inner end of the hollow post F is formed an annular groove,L, to receive the forked end of the spring M, the other end of which isattached to the frame A or to a block, N, secured to the said frame. Thespring M is so formed as, when left free, to hold the post F and hand Gpressed outward and in gear with the minutehand C. To the middle part ofthe spring M is attached a projection, O, in such a position as to bestruck and pushed back by projections 1?, attached to the wheel Q, whichis pivoted to a post, R, attached to the frame A. The wheel Q, is madewith twelve teeth, and is provided with six projections,1 at the basesof the alternate teeth, as indicated in Figs. 1, 2, and 3. The wheel Qis placed in such a position that the pin or tooth S, attached to theinner side of the wheel T, carrying the hour-hand post D, at eachrevolution of the said wheel T will engage with a tooth of the wheel Qand revolve the said wheel Q through the space of one tooth. The tooth Sis so arranged as to engage with and move the wheel Q at the hours oneand thirteen of each day. The dial U is made with twelve spaces,numbered from 1 to 12, inclusive, in the ordinary manner, and preferablywithin the circle of the said numbers the said spaces are numbered from13 to 2i, inclusive, as indicated in l and i. With this constructionfrom one to thirteen o'clock thehand G will be con nected with thehour-hand E, and the two hands G E will move together and serve as anhour-hand, pointing to the ordinary figures of the dial, as shown inFig. 1. At thirteen o clock the tooth S will engage with-the wheel Q andmove the said wheel Q, withdrawing the projection P from the block 0 andallowing the spring M to force the hollow post F and the hand G outwardand into gear with the minute-hand C, so that the two hands 0 G willmove on together, leaving the hour-hand E to point to the inner figuresof the dial, as shown in Fig. i. At one o clock the tooth S will againengage with the wheel Q and move it forward, causing one of theprojections I to engage with the block 0 and force it back, causing thespring M to move thehollow post F inward, withdrawing the hand G fromthe minute-hand O, and throwing it into gear with the hour-hand E, asshown in Fig. 1.

I have located the recesses J K and projections II I in such relationwith each other that as the hand G is carried outward to engage with theminute-hand C the projection H of the hand G will act on the inclinedside of the recess J in hand 0 at thirteen o clock, to rotate the hand Gbackward to carry it into line with the hand 0 at the XII-hour mark onthe dial, and as the hand G is carried inward at one oclock to engagewith the hour-hand 15 the projection I and the hand G- will act on thei11- clined side of the recess K of the hand I), to rotate the hand Gforward from the XII-hour mark on the dial to come in line with the handE at the one oclock mark on the dial.

The wheel Q is held stationary between its movements by a spring, V,attached to the frame A, and resting against the teeth of the said wheelQ, as shown in Fig. l.

I'Iavin g thus described my invention, what I claim as new, and desireto secure by Letters Patent, is-

1. In a time-piece, the combination, with the minute-hand and its post 013, having reccss J, and the hour-hand and its hollow post E I), havingrecess K, of the hand G, having projections II I, and its hollow post F,and an adjusting mechanism, substantially as herein shown and described,whereby the said hand G- can be made to travel with either of the saidhands 0 E, as set forth.

In a time-piece, the combination, with the hands G E and the hand G, ofthe projections II I and recesses J K, said projections and recessesbeing relatively located to cause the hand G to move backward inengaging the hand 0, and to move forward in engaging the hand I5,substantially as shown and described.

3. In a time-piece, the combination, with the hollow post F, of the handG and the hourwheel T, having projection S, of the forked spring M,having projection O, and the wheel (3, having twelve teeth and six sideprojections, I, substantially as herein shown and described, whereby thesaid hand G will be shifted automatically at the end ofeach twelvehours, as set forth.

4-. A time-piece constructed, substantially as herein shown anddescribed, with a third hand adapted to be thrown automatically out ofgear with one of the ordinary hands and into gear with the other at theend of each twelve hours, set forth.

HENRY C. FIGK.

\Vitnesses:

.Luins T. Gn-unn, EDGAR Tarn.

